Browsing by UPNA Author "Pérez Herrera, Rosa Ana"
Now showing items 1-20 of 25
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46-km-long Raman amplified hybrid double-bus network with point and distributed Brillouin sensors
We experimentally demonstrate a 46-km hybrid network that combine point and distributed Brillouin sensors. The proposed sensor network multiplexes low-cost intensity point sensors based on fiber-optic tapers, which are ... -
ECOAL project: delivering solutions for integrated monitoring of coal-related fires supported on optical fiber sensing technology
The combustion of coal wastes resulting from mining is of particular environmental concern, and the importance of proper management involving real-time assessment of their status and identification of probable evolution ... -
Fiber cavity ring down and gain amplification effect
The effect of an erbium-doped fiber amplifier (EDFA) placed inside the fiber ring of a cavity ring down (CRD) configuration is studied. The limitations and advantages of this configuration are discussed, and the study of ... -
Frequency modulated continuous wave system for optical fiber intensity sensors with optical amplification
We report on the use of erbium doped fiber (EDF) amplification to enhance a frequency modulated continuous wave (FMCW) technique for referencing optical intensity sensors located between two Bragg grating structures. The ... -
Gamma radiation measurements using an optical fiber laser
A fiber ring laser cavity configuration was used to analyze the effect of gamma-irradiation over the performance of different types of erbium doped fibers. Preliminary results validates this method to monitor gamma-radiation ... -
Gamma radiation-induced effects over an optical fiber laser: towards new sensing applications
In the present work, the effect of gamma radiation on the performance of different types of erbium-doped fibers (EDFs) when they are used in a fiber ring cavity (FRC) configuration is studied. Several pieces of commercial ... -
High sensitivity fiber-optic liquid level sensor using biconical tapered fibers
A liquid level sensor is presented using a biconical tapered standard single-mode fiber, being its main characteristic an outstanding sensitivity for a low cost transducer. Temperature compensation is enabled with the same ... -
Influence of saturable absorbers on fiber ring laser sensors
In this work, a fiber ring laser sensor has been employed to analyze the influence of passive Er-doped fiber acting as saturable absorber. Lasing modes of fiber ring lasers can be reduced by properly locating a saturable ... -
L-band multiwavelength single-longitudinal mode fiber laser for sensing applications
In this work, a novel single-longitudinal-mode (SLM) four-wavelength laser configuration for sensing applications in the L-band is proposed and experimentally demonstrated. The sensor system presented here is based on ring ... -
Long-range hybrid network with point and distributed Brillouin sensors using Raman amplification
We propose a novel concept for hybrid networks that combine point and distributed Brillouin sensors in a cost-effective architecture that also deploys remote distributed Raman amplification to extend the sensing range. A ... -
Micro-drilled optical fiber for enhanced laser strain sensors
In this work, we present an experimental measurement of temperature and strain sensitivities of a micro-drilled optical fiber (MDOF). The MDOF consisted of a quasi-randomly distributed reflector along a single mode fiber ... -
Modulated fiber ring laser and its application in high-sensitivity temperature sensors
This work presents an experimental demonstration of a scheme based on an internally modulated fiber ring laser for high-sensitivity temperature sensing. The attained temperature resolution has been as low as ± 2pm even ... -
Multiplexing optical fiber Fabry-Perot interferometers based on air-microcavities
In this work we demonstrate the multiplexing capability of new optical fiber Fabry-Perot interferometers based on airmicrocavities using a commercial FBG interrogator. Three optimized air-microcavity interferometer sensors ... -
Optical fiber bus protection network to multiplex sensors: experimental validation of self-diagnosis
The experimental demonstration of a resilient wavelength division multiplexed (WDM) fiber bus network to interconnect sensors is reported. The network recovers operation after failures and it performs 'self-diagnosis', the ... -
Optical fiber lasers assisted by microdrilled optical fiber tapers
In this Letter, we present an analysis of the backscattering generated in a microdrilled tapered fiber within a short-linear-cavity fiber laser. We propose and experimentally demonstrate a fiber cavity laser based on a ... -
Random fiber lasers: application to fiber optic sensors networks
Recently, random mirrors have been proposed as a method to create fiber laser cavities. This kind of cavity is based on cooperative Rayleigh scattering, which is generated along a fiber due to the material inhomogeneities ... -
Resilient amplified double ring optical networks to multiplex optical fibre sensors
We report the experimental demonstration of two configurations of an amplified optical fibre double ring network for the multiplexing of sensors. The networks are designed to be inherently resilient to fibre failures because ... -
Robust fiber-optic sensor networks
The ability to operate despite failure will become increasingly important as the use of optical sensor networks grows, and the amount of sensing information to be handled by a sensor network is increasing, especially for ... -
Simultaneous measurement of humidity and vibration based on a nanowire sensor system using Fast Fourier Transform technique
This paper presents a new sensor system for vibration and relative humidity measurements based on its interaction with the evanescent field of a microwire. The interrogation of the sensing head is carried out by monitoring ... -
Simultaneous measurement of strain and temperature based on clover microstructured fiber loop mirror
In this work, two all-fiber loop mirrors using a clover microstructured fiber for the simultaneous measurement of temperature and strain are presented. The sensing heads are formed by a short piece of clover microstructured ...